# AD 75-20-07: Front Bearing Plate Bolt

- Type: Airworthiness directive
- Status: Current
- Products: Piper PA-36-285
- Effective: September 22, 1975
- Published: September 22, 1975
- Issued: September 15, 1975
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-2373
- Registered aircraft: 40 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F6453673CB5CF787862569990051487A.0001
- DRS record last changed: November 21, 2025
- Page: https://openairdocs.org/ad/75-20-07

## The airworthiness directive

75-20-07 PIPER: Amendment 39-2373. Applies to PA-36-285 serial numbers 36- 7560001 through 36-7560121 inclusive.

Compliance required within the next 10 hours time in service after the effective date of this airworthiness directive.

To determine proper installation of the front bearing plate bolt on the control system torque tube accomplish the following:

a. Remove fuselage belly panel directly beneath the pilot seat.

b. Refer to figure 5-1, sketch A of PA-36 Service Manual and locate front bearing plate to torque tube attachment bolt.

c. Insure bolt (item 14) is tight and exhibits proper thread engagement in barrel nut (visible through aperture in torque tube): a minimum of 1 1/2 threads should be visible.

d. If proper thread engagement is not found, remove forward bolt (item 14) and install proper length bolt (AN4-13A or equivalent).

e. Recheck controls for proper operation.

This amendment becomes effective September 22, 1975.

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 40 (40 by airframe model, 0 by engine model)
- Makers: Piper 40

Models with the most aircraft:

- [Piper PA-36-285](https://openairdocs.org/model/piper-pa-36-285): 40 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/75-20-07/models.md
Every aircraft: https://openairdocs.org/ad/75-20-07/aircraft.md

Its text cites no advisory circulars or STCs.

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